Myriad

The myriad is equal to \(10^4\) = 10,000.[1] It was first used by the Ancient Greeks and it also has its own name in eastern Asian naming systems, although in English its name is "ten thousand". In googology, it is used in Donald Knuth's -yllion system.

In Roman numerals, it was written as ↂ or X̅.

It is also called Wan (萬 in Chinese) or man (まん in Japanese)[2] in Japanese and Chinese counting systems.